SRAM PC-971 9-Speed ChainNO WEAKEST LINK Extremely strong. Incredibly precise. SRAM's PowerChain II increases front and load shifting performance without sacrificing rear shifting precision. The Step2 riveting process increases the Push Pin Power for increased strength and durability. THINGS TO REMEMBER Faster, more accurate shifting at a more affordable price point FEATURES AND BENEFITS Employs PC 991 inner and outer plate designs paired with nickel plated outer and grey